Seeed SLD01098P GPRS/GSM Shield V2.0

Hook your Arduino up to GSM/GPRS cell phone network with the Seeed SLD01098P GPRS/GSM Shield. You can use your Arduino to dial a phone number or send a text to your friend via easy-to-use AT commands. This shield features a quad-band, low power consumption GSM/GPRS module SIM900 as well as a compact PCB antenna.